Almost all of them have European surnames, but only ~20% of them have a European ancestor. If you are white, chances are good one of your ancestors came from France, or used a French surname to fool the authorities.
1 AC, or alternating current means the electrical current is alternating directions in a repetitive pattern.  AC is created by generators in power plants, and other sources. This AC current is delivered to our homes and businesses by the power lines we see everywhere.
Direct Current vs Alternating Current. In order to power all our devices and appliances, we need power. This is generated by power plants and are delivered to us in a variety of ways. Direct current and alternating current are the two ways of transferring power from one point to another with the use of conductors.